First off what kind of chip do you have? some chips can be reflashed through the dashboard, but if your chip is F***ed up then you can do one of two things. Get a programmer for you chip or get an installer disk like slayers and it can do it for you

I just ran "tests". First I tried all of the settings on the modchip. No go; it wouldn't boot. I disabled the modchip, and it would boot. From here I narrowed it down to the modchip or the solder points. I re-soldered the pins in the motherboard. I still got the same problem. So I then deduced that it was a modchip problem. The chip was working for about a year, and then it stopped working, so I know it's not misalligned. This might give you a clue though. Whenever I try to start the xbox with the chip enabled, the xbox turns on for about 2 seconds, then restarts. It does this a total of 3 times and then it stays on, but only displays a black screen and the xbox light blinks red. Thanks for the replies, by the way.

What you are experiecing is called FRAG (Flashing Red and Green Lights). Now FRAGs usually have to do with the chip not being alligned correctly.

Also, usually if it has somethings to do with the flash, the box would boot like normal, but after the xbox logo pops up, it will give you an error code of some kind. Thats why I dont think it is the flash, you chip most likely burnt out.

Without the chip enabled, the xbox boots and then does go to an error message. By being aligned, do you mean that it is just placed in the xbox the incorrect way? I'll try that but now it doesn't look like there's much hope...